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box elder, ash-leaved maple (Acer negundo)

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box elder, ash-leaved maple (Acer negundo; MAPLE FAMILY [Aceraceae]) Small to medium sized, weak-wooded tree with leaves pinnately compound with 3-7 coarsely toothed or shallowly lobed leaflets.  Staminate flowers are in drooping clusters on separate trees from pistillate flowers, which occur in drooping racemes.  Seeds are U-shaped, winged, 1-2" long and persistent on tree.  Mature bark is gray-brown and deeply furrowed.  Native to moist forests, box elder has become very common in disturbed uplands such as abandoned fields, fence rows, and untended urban sites.  [042]

 

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